1957 Angara

1957 Angara
Discovery [1]
Discovered by L. Chernykh
Discovery site CrAO - Nauchnyj
Discovery date 1 April 1970
Designations
MPC designation 1957 Angara
Named after
 Angara River[2]
1970 GF · 1962 WG1
1969 AA
main-belt · Eos [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 59.38 yr (21687 days)
Aphelion 3.1874 AU (476.83 Gm)
Perihelion 2.8281 AU (423.08 Gm)
3.0077 AU (449.95 Gm)
Eccentricity 0.059717
5.22 yr (1905.3 d)
231.39°
0° 11m 20.22s / day
Inclination 11.180°
50.783°
209.77°
Earth MOID 1.81809 AU (271.982 Gm)
Jupiter MOID 1.83655 AU (274.744 Gm)
Jupiter Tisserand parameter 3.219
Physical characteristics
Dimensions 21.44±0.70 km[4]
18.189±0.229 km[5]
30.41±0.58 km[6]
18.38 km (derived)[3]
3.67 h (0.153 d)[1][7]
0.111±0.008[4]
0.1438±0.0310[5]
0.055±0.006[6]
0.14 (assumed)[3]
B–V = 0.900
U–B = 0.380
S [3]
11.36

    1957 Angara, provisional designation 1970 GF, is a stony asteroid from the outer region of the asteroid belt, approximately 18 kilometer in diameter. It was discovered by Russian female astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 1 April 1970.[8]

    The S-type asteroid is a member of the Eos family. It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,904 days). It has a rotation period of 3.67 hours[7] and a geometric albedo of about 0.11–0.14.[4][5]

    It is named for the over 1000-mile long Siberian Angara River that drains Lake Baikal.[2]

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 1957 Angara (1970 GF)" (2015-10-12 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1957) Angara. Springer Berlin Heidelberg. p. 157. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 "LCDB Data for (1957) Angara". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved November 2015.
    5. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved November 2015.
    6. 1 2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved November 2015.
    7. 1 2 Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved November 2015.
    8. ↑ "1957 Angara (1970 GF)". Minor Planet Center. Retrieved November 2015.

    External links


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